diff options
| author | Balaji TK <balajitk@ti.com> | 2011-12-20 10:42:00 +0100 |
|---|---|---|
| committer | Chris Ball <cjb@laptop.org> | 2012-01-12 05:58:46 +0100 |
| commit | d83b6e035f983ec2833bf175ae093281b42ba551 (patch) | |
| tree | 55cee27934449e6f1e3c985a16a9e92596685563 /drivers/mmc | |
| parent | mmc: sh_mmcif: remove now superfluous sh_mmcif_host::data member (diff) | |
| download | linux-d83b6e035f983ec2833bf175ae093281b42ba551.tar.xz linux-d83b6e035f983ec2833bf175ae093281b42ba551.zip | |
mmc: omap: remove clock rate hard coding
MMC master clock rate can vary for each instance of the MMC controller
on the device. Use clk_get_rate instead to get the value.
Signed-off-by: Balaji TK <balajitk@ti.com>
Reviewed-by: Venkatraman S <svenkatr@ti.com>
Tested-by: Hebbar, Gururaja <gururaja.hebbar@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
Diffstat (limited to 'drivers/mmc')
| -rw-r--r-- | drivers/mmc/host/omap_hsmmc.c | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c index d5fe43d53c51..5b35c7e5a26d 100644 --- a/drivers/mmc/host/omap_hsmmc.c +++ b/drivers/mmc/host/omap_hsmmc.c @@ -120,7 +120,6 @@ #define MMC_AUTOSUSPEND_DELAY 100 #define MMC_TIMEOUT_MS 20 -#define OMAP_MMC_MASTER_CLOCK 96000000 #define OMAP_MMC_MIN_CLOCK 400000 #define OMAP_MMC_MAX_CLOCK 52000000 #define DRIVER_NAME "omap_hsmmc" @@ -598,12 +597,12 @@ static void omap_hsmmc_disable_irq(struct omap_hsmmc_host *host) } /* Calculate divisor for the given clock frequency */ -static u16 calc_divisor(struct mmc_ios *ios) +static u16 calc_divisor(struct omap_hsmmc_host *host, struct mmc_ios *ios) { u16 dsor = 0; if (ios->clock) { - dsor = DIV_ROUND_UP(OMAP_MMC_MASTER_CLOCK, ios->clock); + dsor = DIV_ROUND_UP(clk_get_rate(host->fclk), ios->clock); if (dsor > 250) dsor = 250; } @@ -623,7 +622,7 @@ static void omap_hsmmc_set_clock(struct omap_hsmmc_host *host) regval = OMAP_HSMMC_READ(host->base, SYSCTL); regval = regval & ~(CLKD_MASK | DTO_MASK); - regval = regval | (calc_divisor(ios) << 6) | (DTO << 16); + regval = regval | (calc_divisor(host, ios) << 6) | (DTO << 16); OMAP_HSMMC_WRITE(host->base, SYSCTL, regval); OMAP_HSMMC_WRITE(host->base, SYSCTL, OMAP_HSMMC_READ(host->base, SYSCTL) | ICE); |